using Godot;

namespace FOU.Scripts.Elements;

public abstract class Liquid : Element {
    protected Liquid(int x, int y, ref Level level) : base(x, y, ref level) { }

    protected override Vector2I Check(Element source, Vector2I maxDirection) {
        if (GD.Randi() % 2 != 0)
            maxDirection.X *= -1;

        Vector2I freePos = Vector2I.Zero;
        for (int y = 0; y <= maxDirection.Y; y++) { // height
            if (source.Position.Y + y >= _level.SizeY) return freePos; // bounds check

            if (_level.Get(source.Position.X, source.Position.Y + y).GetType() == typeof(Element)) {
                freePos = new Vector2I(source.Position.X, source.Position.Y + y);
            }

            for (int x = -maxDirection.X; x <= maxDirection.X; x++) { // width
                if (freePos != Vector2I.Zero) break;

                if (source.Position.X + x >= _level.SizeX || source.Position.X + x < 0) return freePos; // bounds check

                if (_level.Get(source.Position.X + x, source.Position.Y + y).GetType() == typeof(Element)) {
                    freePos = new Vector2I(source.Position.X + x, source.Position.Y + y);
                    break;
                }
            }
        }

        return freePos;
    }
}